You can register .ro domains and every Romanian extension (.com.ro, .info.ro, .org.ro, .store.ro and more), plus international ones such as .com, .net, .org, .e...
In some cases, yes, using an SRV record. This can specify a service’s server and port, but it only works if the game or application supports it. Not every game supports this method.
Check the game’s documentation for the service name, protocol and required values, then add the record to your domain’s authoritative DNS zone. The target server name must have the appropriate A or AAAA records rather than being a CNAME alias. An SRV record does not open firewall ports or replace the necessary network and game server configuration.